Fig. 1

A Receiver operating characteristic (ROC) curves of apparent diffusion coefficient, relative cerebral blood volume (rCBV), Cho/Cr and Cho/NAA ratios for differentiating low-grade gliomas from non-neoplastic lesions. B Receiver operating characteristic (ROC) curve of NAA/Cr ratio for differentiating low-grade gliomas from non-neoplastic lesions